Now, let's look at the types of systems. Exhaust-only. All right, let's get this one out of the way first. Using exhaust fans is great for local ventilation of bathrooms, kitchens, garages, and sub-slab areas (for radon control), but it's not a great strategy for whole-house ventilation. It does have some advantages: It's cheap.
When writing Common Sense, Paine wanted to show the common man why the United States should be independent of England. He also wanted to show these people that they had the resources needed to build a navy.
COMMON SENSE was an instant best-seller. Published in January 1776 in Philadelphia, nearly 120,000 copies were in circulation by April. Paine's brilliant arguments were straightforward. He argued for two main points: (1) independence from England and (2) the creation of a democratic republic.